Myth: Lasker defeated Capablanca in the
final round of St Petersburg, 1914.

From page 15 of Modern Chess Preparation by Vladimir
Tukmakov (Alkmaar, 2012), concerning the celebrated Lasker v
Capablanca game at St Petersburg, 1914:

‘The young Cuban, who was confidently leading the tournament,
needed only not to lose with Black against the current World
Champion in order to claim overall tournament victory.’

Some myths endure no matter how often they are disproved, or how
easily. Reviewing From Morphy to Fischer by Al Horowitz
(London, 1973) W.H. Cozens commented on page 159 of the May 1974 BCM:

‘Horowitz does fall into one historical error – one which has
been made by other writers before him – when he speaks [on page
69] of “Lasker’s last-round victory over Capablanca” at St
Petersburg, 1914.’